Many places in Wales
begin with the word 'Llan'. This means 'church enclosure'. The
second word is usually the name of the hermit who lived there.
For example: Llanberis in North Wales means 'The church
enclosure of Peris'.

The remains of some
British hermitages and wells can still be seen today, like at
Penmon on Anglesey. The churches were almost all rebuilt in medieval
times. An original one survives at St. Clether in Cornwall.